Method for providing a hermetically sealed coin cell

A method for providing an electrochemical cell, comprising the steps of:

• a) providing a ring having a surrounding ring sidewall extending to a ring upper end and a ring lower end;
• b) providing a base having a surrounding base sidewall extending to a base upper end and a base lower end;
• c) positioning the base inside the ring surrounding the base with the base upper end spaced below the ring upper end;
• d) sealing the base to the ring with a glass material;
• e) positioning a first electrode on the base upper end, the first electrode having spaced apart upper and lower first electrode sides with the first lower electrode side proximate the base upper end and the first upper electrode side spaced below the ring upper end;
• f) supporting a separator on the first upper electrode side;
• g) positioning a second, counter electrode on the separator, the second electrode having spaced apart upper and lower second electrode sides with the second upper electrode side spaced below the ring upper end;
• h) activating the first and second electrodes with an electrolyte;
• and
• i) sealing a plate to the ring upper end.